BMW M3 and BMW M4 Forum - View Single Post

65fastback · 03-04-2021, 10:43 AM

Most will say do your CH first.

Some will say I am on stage 1 stock and no issues.

A tune will void a warranty if you have one.

Do more "searching" here . Then decide for yourself.

03-04-2021, 10:43 AM	#3
65fastback Captain 1137 Rep 822 Posts Drives: every day Join Date: Oct 2016 Location: seattle iTrader: (2)	Most will say do your CH first. Some will say I am on stage 1 stock and no issues. A tune will void a warranty if you have one. Do more "searching" here . Then decide for yourself.
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